Machine for concaving razor.



PATENTED DB0, 5, 1905.

R. MARTIN. MACHINE POR GONGAVING RAzoRs.

APPLICATION FILED LDI-10.10, 1904.

4 SHEETS-SHEET 1.

No. 8Q6,551.

-PA'IENTED DEG. 5, 1905.

RMARTIN. w MACHINE FOR GONGAVING RAZORS'.

APPLICATION FILED 20150.10, 1904.

4 SHEBTS-SHBBT 2.

y zn I 'PATENTED DB0. "5, 1905.

y R. MARTINl MAGHINE'FOR GUNGAVING RAZORS.

APPLICATION FILED DEO.1 0. 1904,

asses Ma rzrn v A, Venier 75,36202/100 jaar WC.

-To' @ZZ whom t may concern.-

NITEDQSTATES PATENT oEEi'oE.

y RUDOLEHMAETINJOE NEWARK, NEW JERSEY, ASSIGNoR To JAMES E.

FULLER,v oE NEWARK, NEW JERSEY. MACHINE FOR v oN`c 'A\||\ic-.. RAzoFxs.l

Beit known that I, RUDOLPH' MARTN, a citizen of the United States, and a resident ofj the city of Newark, county of Essex, and.

`State of New Jersey, have invented certain, new and-useful Improvements in Machines The objects of my invention are to increase the simplicity of the construction. and opera` tion of the machine by decreasing the number of parts of ywhichthe usual machine is com-`y` Y posed, by lessening orvfavoiding the necessity;

for adjustment of the'various parts, andby increasing the convenience in manipulation of the machine. Tov this end I have made many changes in this machine from similar. machines described in previous patents, all with the object of increased efficiency.

Two vertical sliding headshave heretofore beenl employed on the bed of the machine, one of said heads arranged stationary on the 1 machine-and the other adapted to advance or recede from the fixed one by means of a Enumerating the different features of my invention, I would say that, rst, I conrecede from eachother by mounting both of ,the vertical sliding heads on the bed of the machine and having them both operated by a main feed-screw automatically, so as to advance the heads to and from each other. Secondly, I operate the vertical sliding heads from the main driving-shaft by connecting the same to eccentrics on the eccentric-shaft by means of connecting-rods and then 'con- -necting the eccentric-shaft to the"main shaft by miter-gears. Thirdly, my invention consists in the novel constructionA -of m razor-chuck and the cross-feed slide forl the `san i`e',`"which imparts to the chuck an arc- -shapedrperipheral movement, which movement conforms to the shape of the razorback, and which 4construction in a large meas- .Specification of Letters Patent. n Apelieeeien mea December i0, 1904.. serieiNe. 236,290.

ure facilitates the grinding of the razors. The chuck is automatically reciprocated from the main shaft by a worm on said shaftmeshing with a worm-gear on the worm-shaft, and a crank and crank-rod connecting with said worm-shaft imparts the desired reciprocating motion Vto a rocker-carrying cross-feed rod which is afIiXed to the chuck. Fourthly, and lastly., my invention consists in a reciprocating feeding means attached tothe main feed-screw, which is operated from the main shaft and -at the completion ofthe grinding process automatically stops the further op- 'erationof grinding-and carries the vertical sliding. heads back tov their irst positions.

The invention further comprises certain special constructions, combinations, and arrangement: of parts, as hereinafter set forth.

Patented nee. 5,1905. a

The drawings represent in Figure l a plan y of a machine embodying my invention; Fig.

2, afront elevation of the same; Fig. 3, a vertical sectional elevation on line x min Fig. 2; Fig. 4, a plan ,view of the adjustable chuck for holding the' razor; Fig. 5, a side elevation, and Fig? 6 an end view, of the same; Fig. 7, a vertical sectional view on line in Fig. 4 Fig. `8, a side view of the reciprocating feeding means attached to the main feed-screw and operated from the worm-gear shaft.

l In said drawings, 1 represents the bed of the machine, which is provided on its under side with suitable gibs 2 for the reception of the horizontal-feed sliding-heads 3 and 3". Said heads 3 and 3 are controlled by a main *feed-screw 4, which is mounted in bearings is eected by the pulleys 14 and 14, which.

loo V are driven by abelt from a counter-shaft and y over the idlers 15 and 15 on brackets 16 and 16 which are securely fastened to the machine. One advantageous feature of this invention is the means vof driving the grinder# shafts, which consists of the two stationary brackets 16 and 16', secured to the machine, each supporting an adjustable bracket 17, on which are mounted two idlers, (lettered and 15'.)

The brackets 16 and 16' are stationary, with belts passing from the counter-shaft over the idlers and thence over the pulley on the grinder-shaft. The spindle-heads 11 and 11' move to and from the work, and when moving from the work the belts loosen up and when moving toward the work the belts tighten, and the machine when it performs its hardest work does it with the belts tight.

The top surface of the bed 1 supports stationa'ry guidelates 18 and 18', upon which is mounted t e cross-feed slide 19, which moves transversely of the bed 1 and beneath the spindle-heads 11 and 11. Mounted upon said cross-feed slide 19 and moving in the are of a circle is the adjustable chuck 20 for the razor. A stop-pin 21 is secured to the crossfeed slide 19 and operates in a slot 22, formed near the under side of the chuck. The rear upper end of the chuck 2() is provided with a post which serves as a bearing for a horizontal shaft 23, adapted to reciprocate with the chuck, and is furnished at its inner end with a tool-stock which carries the razor'. Reference to Figs. 4, 5, 6, and 7 shows this head to comprise two vertical parallel plates 24 and 24', adapted to open and close by sliding on a guide-pin 25. Positive opening and closing is obtained by means of a ri ht and left handed screw 26, both ends of W 'ch are squared and either of which may be operated by a handlet27. Upon the inner face of the vertical parallel plates are affixed guide-plates 28 and 28', the space therebetween being adapted to receive a small in which is passed through the razor. Inslde of the head are two additional guide-plates 29 .and 29', provided with a pin 30, which serves to steady the same. The sides of the vertical parallel plates are provided with thumb-screws 31 and 31', which pass through said plates and bear against the guide-plates 29 and 29', so that the razor may be adjusted and firmly clamped therebetween.

The shaft 23 has secured to its extremity outside of the bearing a collar 32, the under side of which is fork-shaped and which passes over a'screw threaded stud 33, which is mounted in the bracket 34, affixed to the under side of the bearing. The screw-threaded stud 33 is provided with a knurled head, and if the razor is not in proper alinementthat is, normal to the face of the grindersadvancing or retracting the screw-threaded stud will remedy this difficulty. The abovedescribed tool-stock is intended to support the rear of the razor. The front end is upheldby an abutment 35 on the front ofthe chuck 20. This abutment contains a vertically-adjustable post 36, adapted to receive the back of the razor.

In order to have the grinding-stones wipe the entire breadth of the razor-blade, a vertical movement is necessary. To produce this, a main shaft 37, with a pulley 3S continuously rotating, is supplied. At the inner end of this shaft is secured a miter-gear 39, which meshes with a ruiter-gear on the eccentric-shaft 41. The eccentric-shaft 41 is mounted in bearings 42 and 42', which are secured to the under side of the bed 1. Outside of the bearings and mounted on the ecv centric-shaft 41 are two eccentrics 43 and 43',

which support eccentric-rods 44 and 44'. The eccentric-rods 44 and 44' straddlc the main feedscrew 4 and are connected at their upper extremities to cross -bars 45 and 45', supported in bearings which are formed in the ends of the adjustable studs 46 and 46',which are fitted in the vertical sliding spindle-heads 11 and 11'. Adjustment of thc spindleheads and studs is made by means ofthe knurled screw-heads 47 and 47', attached to the vertical sliding spindle-heads 11 and 11', so as to bring grinders to the work. This spindle-head adjustment isindependent of the automatic movement of the machines.

It is also necessary that the razor should be operated upon for its entire length, and to render such feed perfectly automatic the following group of mechanism is provided. Upon the main shaft 37 is fitted a worm 4S, while a worin-gear 49 upon the worm-gear shaft 9, secured in brackets 51, 51', and 512 and fastened to the bed of the machine 1, supports the same. One end of the worm-gear shaft 9 is provided with a crank 52, termed a crossfeed" crank, which has fastened to it by means of a stud 53 a cross-feed rod 54. The cross-feed slide 19 has a central lateral opening for the reception of a screw-threaded stud 55, which is securely tapped into the adjustable razor-chuck 20. Connected to said stud 55 is a link 56, which in turn connects with the rocker-carrying cross-feed rod 57, said rod being supported and pivoting in the bracket 5S, which is aflixed to the bed 1. The end of the rocker-carrying cross-feed rod 57 is rectangular in shape and is provided with a slot in which is placed a movable block on which is formed. a stud for the reception of the forked cross-feed rod 54. A screw engaging with said block carrying the stud causes the same to change positions, and thercbjT affords a means for increasing or lessening the reciprocation of the razor-chuck 20. The outer end of the cross-feed rod 54 is forked and provided with-a handle in order to allow the latter to be thrown on or ofl of the stud of the rocker-carryii'lg cross-feed rod 57.

In order to automatically feed and draw the vertical spindle-heads to and from their work, the worm-shaft is provided with an adjustable crank 59 and connects with a crank-rod S to a lever 61, which is loosely mounted on the main feed-shaft 4.

IOO

IIO

The main feed-shaft4 has securely mounty mounted near its u per end a double pawl 6211 hand screw-thread cut on the other.

with a projection a ove and below it. Above? -the pawl 62 in the lever 61 is a slot provided.

with a finger and spring, said finger engaging with the upper projection on the pawl. The:

-circular groove in the disk to which theratchets are secured. hasiitted to it an ad-` justable block 63, which isl also providedf with a similar projection and which serves to,

disengage the pawlfrom the feed-ratchet when theprojection of the adjustable block strikes the lower projection on the pawl.. When this takes place, the upper projection; on the pawl throwsthe fingeriece in the le: ver up andermits the paw to disengagei from the fee -ratchet 7 andlengage Withthe return-ratchet 6, the return-ratchet-perform-l ing its function of kseparating the heads until the adjustable block 63in the disk strikes thev lower projection of the pawl again. f Mounted on the bed 1 in bearings-5 and 5 j is the main feed-screw'4, which has a righthand screw-thread' cut on one end and a left- T e main feed-screw 4 passes through the horizontal-feed sliding heads 3' and 34, which are rovided with clearance-holes andrecesses for the reception of compressed spiral springs: 64 and 64. Said spiral springs are mounted on adjusting-nuts 65 and 65which travel on said shaft and serve to keep the heads together. The adjusting-nuts are provided with two studs'corresponding to thestuds on the cross-feed head offthe spindle-head and which are connected-together by the rockers 66 and V66. The adjusting-nuts are secured to the horizontal-feed sliding heads by screwbolts 67 and 67 and have clearance-holes fori the bolts, so that the distance between the outside of the horizontal-feed 'sliding headand the inside of the nut can vary, which is due to the points of .the screw 68 andl 68 wiping across the templets 69 and 69 during the rise and fall of the vertical spindle-heads 11 y and l1. Furthermore, between the rollgear rockers 66 and 66 and in slots provided in them I have affixed adjustable templet's 69 and 69', which engage with screws 68 and 68 which are tapped through the horizontalfeed sliding heads 3 and 3, the points of whichare adapted to wipe across the templets 'duringthe rise and fall of the vertical sliding spindle-heads and rockers. By this arrangement any form of contour in the concaving of a razor can be produced, since the spring maintains the against the templet.

The operation of the machine is as follows:

A small pin is passed through the hole in the point Aof the screw rear end of the razor and said pin passed down between the guide-plates. The Vbinding-screw is then turned home by means of the handle, after which the front clamping- -screws'are brought to firmly bear against the inner additional guide-plates, which serve to properly and securely hold and adjust therazor. .-If it is then found necessary to further aline the razor vertically, the knurled head operating the screw at the end of the vshaft is turned in either direction, which then will turn the tool-stock bodily, thereby remedyin Vthe difficulty at`once. The belt is then shifted, and the machine performs its work automatically. The driving pulley turns' main shaft, and that by means of the mounted on the worm-gear shaft and connected, by means of the cross-feed rod, tothe rocker carrying cross-feed rod imparts the transverse motion to the razor-chuck, and the adjustable horizontal feed sliding head connected, by means of the crank-rod, to the lever carrying a pawl, said pawl being in engagement with the ratchets operates the main feed-screw, which serves. to automatically draw the vertical spindle-heads to and from the work. The above-described operations taking place, the grinders now rise and fall, while at the same time the razor'travels longitudinally between the grinders on the arc of'a circle until the latterhave traversed the entire side surfaces. The feed movement is then automatically reversed c by means of the ratchets and pawl, and the act is repeated until the 'desired amount has been removed.

I do not desire to be limited to the exact construction Y shown, as I am aware --that changes andvarious modifications may be made in the details of construction without IOO IIO

departing from the spirit and scope of my'invention, that Vmy improved machine, of course, can be utilized to grind aside from razors any kind of keen-edged articlessuch as, 'for instance, knife-blades, scissors, surgical lances, &c.

2. The combination in a grinding-machine of two simultaneously-movable and automatically-operated vertical sliding heads, designed to automatically advance toward and So,`what I in accordance with the above4 IZO recede from each other, and a main feedscrew for simultaneously operating the said vertical sliding heads.

3. The combination in a grinding-machine of two simultaneously-movable and automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, gibs secured to the bed, horizontal sliding heads moving in said gibs, having the vertical sliding heads secured to them and a main feed-screw for simultaneously operating the said horizontal sliding heads.

4. The combination in a grinding-machine of two simultaneously-movable and automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, gibs secured to the bed, horizontal sliding heads moving in said gibs, standards attached to said horizontal sliding heads, supporting vertical slidin heads, means for reciprocating said vertica sliding heads, and a main feed-screw for simultaneously operating the said horizontal sliding heads.

5. The combination in a grinding-machine of two movable and automatically-operated vertical sliding heads, gibs secured to the bed, horizontal sliding heads moving in said gibs, standards attached to the said horizontal sliding heads supporting vertical sliding heads, a main feed-screw supporting adjustable nuts and springs, rockers connecting the adjustable nuts with the vertical sliding heads and operating the said horizontal sliding heads, substantially as described.

6. The combination in a grinding-machine of two movable and automatically-operated vertical sliding heads, horizontal sliding heads, standards attached to same and supporting vertical sliding heads, a main feedscrew supporting adjustable nuts and springs,

rockers connecting the nuts with the vertical sliding heads, removable templets affixed to the roll-gear rockers, and screws affixed to the horizontal heads in order to cause the templet and screw to coperate, substantially as described.

7. The combination in a grinding-machine of two simultaneously-movable land automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, a connecting-rod attached to each vertical sliding head, a connecting -rod shaft, and main driving shaft operating said connecting rod shaft, and means attached to said connecting-rod shaft, operating the vertical sliding heads.

8. The combination in a grinding-machine of two simultaneously-movable and automatically-operated vertical sliding heads, designed to automatically advance toward and `recede from each other, an eccentric-rod attached to each vertical sliding head, an eccentric-shaft mounted in bearings on the machine, eccentrics on the eccentric-shaft and connected to the eccentric-rods, and a pair of miter-gears connecting the main drivingshaft with the eccentric-shaft, operating the vertical sliding heads.

9. The combination ina grinding-machine of two simultaneously-movable and automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, means for simultaneously operating the said heads and an adjustable razor-chuck having an arc-shaped peripheral movement cooperating with the said vertical sliding head.

10. The combination in a grinding-machine of two simultaneously-inovable and automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, means for simultaneously operating the said heads a main shaft supporting a worm in engagement with a worin-shaft supporting a worm-gear, a wormshaft mounted in bearings aflixed to the inachine, a crank secured to the worin-shaft, a crank-rod connecting the crank with the rocker-carrying cross-feed rod, a link connecting a stud on the adjustable razor-chuck and an adjustable razor-chuck moun ted on a crossfeed slide, all coperating with the said vertical sliding head.

l1. The combination in a grinding-machine of two simultaneously-1novable and automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, means for simultaneously operatin r the said heads a crossfeed slide mounted on guide-plates of the machine, an adjustable. razor-chuck having an arc-shaped peripheral movement, a toolstock mounted in said chuck, a reciprocatinglink mounted and pivoting in a bracket attached to bed of machine, and a crank and crank-rod connected to worm-gear shaft operating said adjustable chuck.

l2. The combination in a grinding-machine of two simultaneously-movable and automatically-operated vertical sliding heads, designed to automatically advance toward and recede from each other, a main feedscrew operating vertical sliding heads and rcciprocating feeding means attached to said main feed-screw and operated from the main driving-shaft.

13. n a machine for grinding razors, a tool-stock comprising a shaft, a transverse guide-pin at one end, two parallel plates, adapted to slide upon said sin, a clampingscrew which controls said. p ates, two intermediate guide-platcs and a pin for guiding said plates, small guide-plates in paralle plates for the reception of the razor-pin, a collar on the end of the shaft and a bracket containing an adjusting-screw, all operating substantially as described.

14. The combination in a grinding-ma- IOO lIO

chine of tWo moyable and automatically-operated vertical slidingheads, a main feedscreW operating vertical sliding heads, a feedratchet and a return-ratchet, a double paWl mounted on a lever and in engagement With said ratchets, a Worm-gear shaft su porting a crank, a crank-rod connecting the lever carrying the paWl vWith the crank on the Worm-gear shaft, asl and for the purposes set forth.

15. 'The combination in a grinding-machine of two, movable and automatically-operated vertical 'sliding' heads a main feedscrew operating vertical sliding heads and carrying a feed-ratchet and a return-ratchet, 

